Date/Time Sat MW Eye diam (km) Est RMW (km) Ring % Tb diff (K) Score Meaning JTWC estimate
20260304T103625 ssmis17_85 233.1 50.6 9.6% 5.7 -5.7 n/a   35.0 kts
20260304T175648 amsr2_85 66.6 2.5 0.0% 4.7 -4.7 n/a   35.0 kts
20260305T061219 amsr2_85 244.2 117.3 NaN% NaN NaN n/a   39.8 kts
20260305T102146 ssmis17_85 77.7 33.9 0.0% 4.1 -4.1 n/a   36.4 kts
20260305T104554 ssmis16_85 122.1 56.1 0.0% 6.7 -6.7 n/a   36.0 kts
20260305T170152 amsr2_85 88.8 39.5 0.0% 2.8 -2.8 n/a   33.9 kts
20260305T213039 ssmis17_85 177.6 83.9 0.0% 3.4 -3.4 n/a   31.4 kts

Key:

Diameter values indicate the estimated surface eyewall diameter (the MI eyewall edge diameter minus 10 km).

Diameter values are red if Ring % <= 65, yellow/brown if Ring % <= 85 and green if Ring % > 85.

"Ring %" is the percentage of the "ring" (eyewall inner boundary) that is 1) colder than the "hot spot" (warmest eye pixel) in the eye by 20K, or 2) the percentage that is a) colder than 232K and b) colder than the "hot spot" by 10K, whichever is greater.

"Tb diff" is the difference between the "hot spot" (warmest eye pixel) and the warmest pixel on the eyewall.

Scores are listed as negative, and not used, when the JTWC or NHC estimated Vmax is <50 kts in order to rule out weak but highly symmetric TCs.

Error messages in intensity scores: -920 is used when the hottest pixel in the eye is <200K, to prevent false positives; -909 is a failure to process (bad input data).